DataTableReader::GetFloat Method (Int32)
Gets the value of the specified column as a single-precision floating point number.
Assembly: System.Data (in System.Data.dll)
Parameters
- ordinal
-
Type:
System::Int32
The zero-based column ordinal.
Implements
IDataRecord::GetFloat(Int32)| Exception | Condition |
|---|---|
| ArgumentOutOfRangeException | The index passed was outside the range of 0 to FieldCount - 1. |
| DeletedRowInaccessibleException | An attempt was made to retrieve data from a deleted row. |
| InvalidOperationException | An attempt was made to read or access a column in a closed DataTableReader. |
| InvalidCastException | The specified column does not contain a single-precision floating point number. |
No conversions are performed; therefore the data retrieved must already be a single-precision floating point number or must be coercible to a single-precision floating point number.
Call IsDBNull to see if there are null values before calling this method.
The following example displays the contents of the column numbered 2 within the passed-in DataTableReader. If the value the column within a particular row is null, the code displays the text <NULL>. If the data within the column is not of the correct type, the example displays an error message for each row.
Available since 2.0